Trailer.



L. WATKINS.

TRAILER.-

1 238,,6U&

APPLICATION FILED OCT. 2h I916.

Patented Aug. 28, 1917.

2 SHEETS-:SHEET I L. WATKINS. TRAILER.

APPLICATION FILED OCT. 2!. 19'6- ifiwfinao PatentedAug. 28,191?

2 SHEETS-SHEET 2.

automatically changed in order tocausethe njp'erfturning of a corner, the proper folowing of the succeeding wheels and the com- .inunicating'of the tractor force.

When the tractor 1 turns to one side the change of the position of axle 8 will cause the rock shaft 7 to rock to one side as 6 shown in Fig.. 3.- This vwill communicate movement to all of the wheels of the trailer 1'0 iii-{order to cause the wheels of the trailer toassume the position shown in Fig. 3 when tractor, a depending arm on each end of said rock shaft, a link for connecting one depending arm of the rock shaft to one of the levers on the trailer, and a link for connecting the other of the depending arms of the rock shaft with the rear axle of the tractor,

'30 whereby whenever said rear axle is turned for passing around a corner motion will be transmitted to said rock shaft rocking same in a certain direction and from thence to the wheels of the trailer.

2. In a device of the characterdescribed, a tractor and a trailer therefor, said trailer beihg formed with'means for shifting the position of the wheels thereof whereby said wheels will follow the path of the rear wheels of the tractor, said means comprising levers for turning said wheels, links for connecting the levers of the same axle, a rock shaft arranged between the axles of said trailer, a depending arm arranged on each end of said rock shaft, a. link for each arm connecting the arms to one of the levers on each axle. of the trailer, whereby when the front wheels turn in one direction the rear wheels will turn in the opposite direction, a rock shaft. arranged between the front axle of said trailer and the rear axle of said tractor, a

mentioned rock shaft, a link for connecting one of said last mentioned depending arnis to one of the levers on the trailer, and a link for connecting the other of said last mentioned depending arms with the rear axle of the tractor, whereby whenever said rear axle is turned in passing around a corner motion will be transmitted to both of said rock shafts and fromthence to the wheels of-the trailer for causing the same to follow the rear wheels of the tractor.

LEIGH WATKINS.

Witnesses: J

H. W. Bum, W. K. BAIBD.

depending arm on each end of said last 

